/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/*
 * Based on EasySSLProtocolSocketFactory from commons-httpclient:
 * 
 * $Header:
 * /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//httpclient/src/contrib/org/apache/commons/httpclient/contrib/ssl/DummySSLProtocolSocketFactory.java,v
 * 1.7 2004/06/11 19:26:27 olegk Exp $ $Revision$ $Date: 2005-02-26 05:01:52
 * -0800 (Sat, 26 Feb 2005) $
 */

package ai.platon.pulsar.protocol.httpclient;

import org.apache.commons.httpclient.ConnectTimeoutException;
import org.apache.commons.httpclient.HttpClientError;
import org.apache.commons.httpclient.params.HttpConnectionParams;
import org.apache.commons.httpclient.protocol.ControllerThreadSocketFactory;
import org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import java.io.IOException;
import java.net.InetAddress;
import java.net.Socket;
import java.net.UnknownHostException;

public class DummySSLProtocolSocketFactory implements
        SecureProtocolSocketFactory {

    /**
     * Logger object for this class.
     */
    private static final Logger LOG = LoggerFactory
            .getLogger(DummySSLProtocolSocketFactory.class);

    private SSLContext sslcontext = null;

    /**
     * Constructor for DummySSLProtocolSocketFactory.
     */
    public DummySSLProtocolSocketFactory() {
        super();
    }

    private static SSLContext createEasySSLContext() {
        try {
            SSLContext context = SSLContext.getInstance("SSL");
            context.init(null,
                    new TrustManager[]{new DummyX509TrustManager(null)}, null);
            return context;
        } catch (Exception e) {
            if (LOG.isErrorEnabled()) {
                LOG.error(e.getMessage(), e);
            }
            throw new HttpClientError(e.toString());
        }
    }

    private SSLContext getSSLContext() {
        if (this.sslcontext == null) {
            this.sslcontext = createEasySSLContext();
        }
        return this.sslcontext;
    }

    /**
     * @see org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory#createSocket(String, int, InetAddress, int)
     */
    public Socket createSocket(String host, int port, InetAddress clientHost,
                               int clientPort) throws IOException {

        return getSSLContext().getSocketFactory().createSocket(host, port,
                clientHost, clientPort);
    }

    /**
     * Attempts to get a new socket connection to the given host within the given
     * time limit.
     * <p>
     * To circumvent the limitations of older JREs that do not support connect
     * timeout a controller thread is executed. The controller thread attempts to
     * create a new socket within the given limit of time. If socket constructor
     * does not return until the timeout expires, the controller terminates and
     * throws an {@link ConnectTimeoutException}
     * </p>
     *
     * @param host         the host name/IP
     * @param port         the port on the host
     * @param localAddress the local host name/IP to bind the socket to
     * @param localPort    the port on the local machine
     * @param params       {@link HttpConnectionParams Http connection parameters}
     * @return Socket a new socket
     * @throws IOException          if an I/O error occurs while creating the socket
     * @throws UnknownHostException if the IP address of the host cannot be determined
     */
    public Socket createSocket(final String host, final int port,
                               final InetAddress localAddress, final int localPort,
                               final HttpConnectionParams params) throws IOException {
        if (params == null) {
            throw new IllegalArgumentException("Parameters may not be null");
        }
        int timeout = params.getConnectionTimeout();
        if (timeout == 0) {
            return createSocket(host, port, localAddress, localPort);
        } else {
            // To be eventually deprecated when migrated to Java 1.4 or above
            return ControllerThreadSocketFactory.createSocket(this, host, port,
                    localAddress, localPort, timeout);
        }
    }

    /**
     * @see org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory#createSocket(String, int)
     */
    public Socket createSocket(String host, int port) throws IOException {
        return getSSLContext().getSocketFactory().createSocket(host, port);
    }

    /**
     * @see org.apache.commons.httpclient.protocol.SecureProtocolSocketFactory#createSocket(Socket, String, int, boolean)
     */
    public Socket createSocket(Socket socket, String host, int port,
                               boolean autoClose) throws IOException {
        return getSSLContext().getSocketFactory().createSocket(socket, host, port,
                autoClose);
    }

    public boolean equals(Object obj) {
        return ((obj != null) && obj.getClass().equals(
                DummySSLProtocolSocketFactory.class));
    }

    public int hashCode() {
        return DummySSLProtocolSocketFactory.class.hashCode();
    }

}
